Removal of hydrogen sulfide from fluid streams

Abstract

A novel sorbent comprising zinc oxide and a Group IIA metal silicate. A process for the removal of hydrogen sulfide from a fluid stream that comprises contacting a fluid stream with a novel sorbent. A further feature of this invention includes a novel method for preparing a composition comprising zinc oxide and a Group IIA metal silicate.

That which is claimed is: 
     
       1. A sorption process which comprises: contacting a fluid stream containing hydrogen sulfide with a composition consisting essentially of zinc oxide and a Group IIA metal silicate.   
     
     
       2. A process in accordance with claim 1 wherein the concentration of said zinc oxide is in the range of from about 35 weight percent to about 95 weight percent, based upon the total combined weight of said zinc oxide and said Group IIA metal silicate. 
     
     
       3. A process as recited in claim 2 wherein said Group IIA metal silicate is selected from the group of metal silicates consisting of magnesium silicate, calcium silicate and mixtures thereof. 
     
     
       4. A sorption process which comprises: contacting a fluid stream containing hydrogen sulfide with a composition consisting essentially of zinc oxide, a Group IIA metal silicate, and a promoter metal oxide wherein the metal of said promoter metal oxide is selected from the group consisting of tungsten, molybdenum, Group VIII metals and mixtures thereof. 
     
     
       5. A process in accordance with claim 4 wherein the concentration of said zinc oxide is in the range of from about 35 weight percent to about 95 weight percent, based upon the total combined weight of said zinc oxide and said Group IIA metal silicate. 
     
     
       6. A process in accordance with claim 5 wherein said Group IIA metal silicate is selected from the group of metal silicates consisting of magnesium silicate, calcium silicate and mixtures thereof. 
     
     
       7. A process in accordance with claim 6 wherein the concentration of said promoter metal oxide is in the range of from about 0.1 weight percent to about 15 weight percent based upon the total combined weight of said zinc oxide and said Group IIA metal silicate.